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What are the two most abundant elements in Earth’s crust?

The current estimate for the age of Earth is about ____ years.

The chain of mountains found in the center of the Atlantic Ocean basin is called the

What does the texture of an igneous rock tell you about its cooling history?

Sills are formations of lava that cool on Earth’s surface in giant sheets.

Which igneous rock has the same chemical composition as basalt, but a different grain size?

Evidence that Earth’s magnetic field has undergone numerous reversals can be found

The presence of an oceanic trench, a chain of volcanic mountains along the edge of a continent, and deep-seated earthquakes is characteristic of

Accumulations of silt, sand, or other materials that settle out of water are called

Which of the following statements about earthquakes is FALSE?